Further understanding of the multiple equilibria interaction pattern between ionic liquid and beta-cyclodextrin
文献类型：期刊论文
| 作者 | Zhang, Jingjing; Shi, Jianfeng; Shen, Xinghai |
| 刊名 | JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 79期号:3-4页码:319-327 |
| 关键词 | Cyclodextrin Ionic Liquid Tf2n- Inclusion Complex Multiple Equilibria |
| ISSN号 | 0923-0750 |
| DOI | 10.1007/s10847-013-0354-6 |
| 英文摘要 | The interactions of the ionic liquids 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (C (n) mimTf(2)N, n = 2, 4, 6, 8, 10, 12) with beta-cyclodextrin (beta-CD) in aqueous solutions are investigated in this work. The stoichiometry and apparent association constants are obtained by competitive fluorescence method and isothermal titration calorimetry (ITC). The results show that C(2)mimTf(2)N, C(4)mimTf(2)N, and C(6)mimTf(2)N mainly form 1:1 (guest:host) inclusion complexes with beta-CD, whereas C(8)mimTf(2)N, C(10)mimTf(2)N, and C(12)mimTf(2)N form both 1:1 and 1:2 inclusion complexes, the latter of which are mainly attributed to the formation of the C (n) mim(+)-2 beta-CD complexes. Besides, Tf2N- only forms the 1:1 complex with beta-CD owing to a charge resonance structure that breaks the symmetry of the structure of Tf2N-, which is proved by Fourier transform infrared spectra. The thermodynamic parameters obtained by ITC reveal that the formation of the inclusion complexes are enthalpy-controlled for C(2)mimTf(2)N, C(4)mimTf(2)N, and C(6)mimTf(2)N, while for the C(8)mimTf(2)N/beta-CD system, the process becomes entropy and enthalpy driven. Based on high-resolution mass spectrometry used with electrospray ionization results, the interaction between C (n) mimTf(2)N and beta-CD is found to follow the multiple equilibria interaction pattern which was suggested in our previous work. |
| 语种 | 英语 |
| WOS记录号 | WOS:000339274100006 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/51755]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shen, Xinghai |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Radiochem & Radiat Chem Key Lab Fundamental Sci, BNLMS, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Jingjing,Shi, Jianfeng,Shen, Xinghai. Further understanding of the multiple equilibria interaction pattern between ionic liquid and beta-cyclodextrin[J]. JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY,2014,79(3-4):319-327. |
| APA | Zhang, Jingjing,Shi, Jianfeng,&Shen, Xinghai.(2014).Further understanding of the multiple equilibria interaction pattern between ionic liquid and beta-cyclodextrin.JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY,79(3-4),319-327. |
| MLA | Zhang, Jingjing,et al."Further understanding of the multiple equilibria interaction pattern between ionic liquid and beta-cyclodextrin".JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY 79.3-4(2014):319-327. |
入库方式： OAI收割
来源：化学研究所
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